docs: add references to new drivers for ADXL345, BH1750, and TM1638.

Signed-off-by: Ron Evans <ron@hybridgroup.com>

README.md

@@ -243,6 +243,7 @@ a shared set of drivers provided using the `gobot/drivers/gpio` package:
 	- RGB LED
 	- Servo
 	- Stepper Motor
+	- TM1638 LED Controller
 
 Support for many devices that use Analog Input/Output (AIO) have
 a shared set of drivers provided using the `gobot/drivers/aio` package:
@@ -262,6 +263,8 @@ drivers provided using the `gobot/drivers/i2c` package:
 	- Adafruit Motor Hat
 	- ADS1015 Analog to Digital Converter
 	- ADS1115 Analog to Digital Converter
+	- ADXL345 Digital Accelerometer
+	- BH1750 Digital Luminosity/Lux/Light Sensor
 	- BlinkM LED
 	- BME280 Barometric Pressure/Temperature/Altitude/Humidity Sensor
 	- BMP180 Barometric Pressure/Temperature/Altitude Sensor

drivers/gpio/README.md

@@ -11,21 +11,23 @@ go get -d -u gobot.io/x/gobot/...
 
 ## Hardware Support
 Gobot has a extensible system for connecting to hardware devices. The following GPIO devices are currently supported:
-  - Button
-  - Buzzer
-  - Direct Pin
-  - Grove Button
-  - Grove Buzzer
-  - Grove LED
-  - Grove Magnetic Switch
-  - Grove Relay
-  - Grove Touch Sensor
-  - LED
-  - Makey Button
-  - Motor
-  - Proximity Infra Red (PIR) Motion Sensor
-  - Relay
-  - RGB LED
-  - Servo
+	- Button
+	- Buzzer
+	- Direct Pin
+	- Grove Button
+	- Grove Buzzer
+	- Grove LED
+	- Grove Magnetic Switch
+	- Grove Relay
+	- Grove Touch Sensor
+	- LED
+	- Makey Button
+	- Motor
+	- Proximity Infra Red (PIR) Motion Sensor
+	- Relay
+	- RGB LED
+	- Servo
+	- Stepper Motor
+	- TM1638 LED Controller
 
 More drivers are coming soon...

drivers/i2c/README.md

@@ -15,6 +15,7 @@ Gobot has a extensible system for connecting to hardware devices. The following
 - Adafruit Motor Hat
 - ADS1015 Analog to Digital Converter
 - ADS1115 Analog to Digital Converter
+- ADXL345 Digital Accelerometer
 - BH1750 Digital Luminosity/Lux/Light Sensor
 - BlinkM LED
 - BME280 Barometric Pressure/Temperature/Altitude/Humidity Sensor